.contentArea_leftDiv_forTree{
    width: 250px;
    height: 100%;
    background-color: #F7F7F7;
    box-shadow: 0px 15px 8px #3A5C6D;
    margin-left: 15px;
}

.div-center-right-off{
    position: absolute;
    margin-left: 0px;
    height: calc(100% - 165px);
}

.div-center-right-full{
    margin-left: 15px;
}